EP3369163A1 - Moteur linéaire électromagnétique - Google Patents

Moteur linéaire électromagnétique

Info

Publication number
EP3369163A1
EP3369163A1 EP16801302.7A EP16801302A EP3369163A1 EP 3369163 A1 EP3369163 A1 EP 3369163A1 EP 16801302 A EP16801302 A EP 16801302A EP 3369163 A1 EP3369163 A1 EP 3369163A1
Authority
EP
European Patent Office
Prior art keywords
electromagnets
columns
axis
motor according
permanent magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16801302.7A
Other languages
German (de)
English (en)
Inventor
Paolo DE MAR
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hdm Srl
Original Assignee
Hdm Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hdm Srl filed Critical Hdm Srl
Publication of EP3369163A1 publication Critical patent/EP3369163A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B5/00—Machines or pumps with differential-surface pistons
    • F04B5/02—Machines or pumps with differential-surface pistons with double-acting pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0895—Component parts, e.g. sealings; Manufacturing or assembly thereof driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/141—Stator cores with salient poles consisting of C-shaped cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/12—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems

Definitions

  • the present invention relates to an electromagnetic linear motor.
  • the motor can be used to move the movable parts of various apparatuses, e.g. a reciprocating linear compressor, a linear actuator, or a solenoid valve.
  • compressors in which numerous types are known: piston- operated, screw- operated, lobed, with propellers, centrifugal etc., for the most part moved by rotary motors.
  • the main object of the present invention is to propose an electromagnetic linear motor, in particular to produce linear compressors, actuators, and solenoid valves. Thanks to the linear motor one can e.g. make a linear reciprocating compressor with double efficiency compared to the current reciprocating compressors driven by rotary motors; in general the motor can be integrated into systems that require compression of a fluid, into compression systems, into refrigerant systems, heat pumps or volume compressors for internal combustion engines.
  • FIG. la and lb show a sectional view of the linear motor configured to drive a compressor, respectively in two different operating phases;
  • FIGS 2a - 2h show schematic views in succession representative of a complete working cycle of the linear motor with single permanent magnet;
  • FIG. 3a - 3h show schematic views in succession representative of a full working cycle of the linear motor with a double permanent magnet
  • Figure 4 shows a perspective view of some components of the linear motor of Figure la and lb;
  • FIG. 5a - 5c show a front, above and perspective view, respectively, of a compressor obtainable according to the present invention
  • FIG. 5d shows a sectional view taken along the plane A- A of Figure 5b;
  • FIG. 6a - 6b show a sectional view of the linear motor configured as actuator
  • FIGS. 7a - 7c show a side, front and perspective view of an actuator driven by the linear motor
  • FIGS. 8a - 8c schematically show the operation of a distribution valve driven by the linear motor with a permanent magnet
  • FIGS. 9a - 9c show a side, front and perspective view of an embodiment of distribution valve driven by the linear motor
  • FIG. 10a - 10c schematically show the operation of a distribution valve driven by a linear motor with two permanent magnets
  • FIG. 11a - 11c show a side, front and perspective view of an embodiment of a distribution valve operated by the linear motor.
  • the compressor comprises the electromagnetic linear motor, which comprises a stator 1 constituted by a plurality of electromagnets 2 (see also Fig. 2).
  • Each electromagnet 2 comprises a core U on which are wound reels or windings 3.
  • the core U comprises a central linear segment 4, with an axis q, from the ends of which extend orthogonally to said axis q two polar expansions 5 parallel to each other.
  • the central linear segment and the two polar expansions 5 together form a ferromagnetic core in the shape of a "C” or a "U” or a “horseshoe”.
  • the polar expansions 5 are recessed in the shape of an arc 6, in the part distal to said axis q, with a radius slightly greater than the diameter of the permanent magnet 7 that they will skim.
  • the longitudinal dimensions of the ferromagnetic core are determined by the length R between the extreme edges of the polar expansions and by the distance r between the inner edges of the polar expansions (Fig. 4).
  • the electromagnets 2 are stacked to constitute a cylindrical chamber 100 with a longitudinal axis W, so that the stator 1 has a generally tubular shape.
  • the electromagnets 2 are applied on the side walls of a hollow cylinder 401 (Fig. 4) and provided with through- holes in which the expansions 5 are inserted.
  • stator 1 Within the stator 1 is placed a cylindrical permanent magnetic component 7 which is mounted to slide along the axis W.
  • the stator 1 surrounds the permanent magnet 7 with the electromagnets 2, whose magnetic poles, i.e. the polar expansions 5, are arranged radially and orthogonally with respect to said component 7 and consequently extend radially and orthogonally relative to the axis W.
  • the arcuate shape of the expansions 5 facilitates their symmetric distribution about, and to skim, the permanent magnet 7 (Fig. 4).
  • the electromagnets 2 are linearly packed and stacked with their axes q aligned to form columns A, B with axis Q, so that the expansions 5 of a column A are offset along the axis W compared to those of another column B.
  • Each electromagnet 2 is arranged linearly with another electromagnet 2, with coincident axes q, so that the respective expansions 5, the poles, form along the columns a longitudinal sequence parallel to the axis W.
  • the poles of the permanent magnet 7 are oriented along the axis W.
  • electromagnets 2 there are columns of electromagnets 2 placed radially side by side, arranged around the permanent magnet 7, and each column with axis Q parallel to the axis W (axis of the stator 1, and thus longitudinal axis of the chamber 100).
  • the electromagnets 2 when powered generate respective magnetic poles that are placed in a row radial and parallel to the axis W and, consequently, to the permanent magnetic component 7 which they have to skim.
  • the magnetic field closes from an N pole to an S pole hitting the permanent magnetic component 7 and the axis W.
  • the linear motor comprises at least a first plurality of electromagnets 2 with related coils 3 with the cores' axes q linearly arranged to form one of the columns A with axis Q.
  • first plurality of electromagnets 2 with related coils 3 with the cores' axes q linearly arranged to form one of the columns A with axis Q.
  • FIG. 1, 4 there are indicated five electromagnets 2, and at least a second plurality of electromagnets 2, with relative coils 3, with the core axes q placed lined up to form one of the columns B with axis Q.
  • the bases of the columns A, B are offset from each other by a distance h in a direction parallel to the axis W.
  • the electromagnets 2 constituting the columns are linearly arranged with coincident axes q to constitute an axis Q parallel to the axis W, with a spacing Z between the poles of each adjacent electromagnet.
  • the spacing Z may vary according to design and operational requirements.
  • the electromagnets 2 are preferably identical to each other, regardless of the column they belong to.
  • the electromagnets 2 of a column A are arranged staggered along the axis W, with respect to the electromagnets 2 of an adjacent column B, by a distance h.
  • the order of magnitude of the offset h between the columns A and B may vary according to design and operational requirements.
  • the electromagnets 2 of a first column A are electrically powered and biased in sequence, simultaneously or alternately to the electromagnets 2 of a second column B staggered with respect to the first by the distance h.
  • a first phase is shown of a complete compression cycle of a fluid.
  • the permanent magnet 7 is keyed on a stem 8 connected at the two ends respectively to a first plunger 9a and a second plunger 11a placed, in this case, symmetrically with respect to the permanent magnet 7; in the example each plunger 9a, 11a is placed at a respective end of the stem 8.
  • first plunger 9a is inserted airtightly in a first cylinder 9b
  • second plunger 11a is inserted watertightly in a second cylinder l ib.
  • a vacuum is created in the lower part 9c of the first cylinder 9b, below the first plunger 9a, leading to a depression and consequent suction of fluid through a first suction opening 10a intercepted by a non-return suction valve.
  • the fluid aspirated in the previous cycle and contained in the top part 9d of the first cylinder 9b, above the first plunger 9a, is compressed and pushed through a first delivery opening 10b, intercepted by a non-return delivery valve which communicates with a storage tank under pressure.
  • the second plunger 11a dragged by the displacement of the permanent magnet 7, moves in the direction of arrow D 1 causing a depression in the bottom part 11c of the second cylinder l ib, under the second plunger 11a, leading to a suction of fluid through a second suction opening 12a intercepted by a non-return- suction valve.
  • the first plunger 94 by moving to the direction of arrow D2 determines a depression in the top part 9d of the first cylinder 9b, resulting in a suction of fluid through a third suction opening 13a intercepted by a non-return suction valve.
  • the previously- sucked fluid and contained in the lower part 9c of the first cylinder 9b is compressed and pushed through a third discharge opening 13b intercepted by a non-return delivery valve that communicates with the storage tank under pressure.
  • the second plunger 11a dragged by the displacement of the permanent magnet 7, moves to the arrow direction D2 causing a depression in the top part l id of the second cylinder l ib, resulting in a suction of fluid through a fourth suction opening 14a intercepted by a non-return suction valve.
  • the fluid previously sucked and contained in the lower part 11c of the second cylinder l ib is compressed and pushed through a fourth nonreturn delivery valve 14b that communicates with the storage tank under pressure.
  • the compressor compresses a volume of fluid equal to the volume of one of the two cylinders 9b, l ib less the volume of a plunger 9a, 1 la multiplied by four:
  • Vcycie (Vcyiinder - Vpiunger) * 4, where V stands for volume (e.g. in m 3 ).
  • first and the second cylinder 9b, l ib have an identical volume
  • first and the second plunger 9a, 11a have an identical volume
  • a small volume occupied by the stem 8 must be subtracted from V cyc ie.
  • the capacity of the compressor usually expressed in cubic meters per minute, will be determined by Vcycie times the frequency of cycles per second multiplied by sixty:
  • a compressor as described and configured with two pistons is able to compress a volume of fluid equal to that compressed by a reciprocating compressor, moved by a rotary motor, with four pistons.
  • the number of pistons being equal and with the same size, it can compress a double quantity of fluid.
  • FIG 2a the start of the operating cycle of the electromagnetic linear motor is schematically represented, which moves the compressor, in which two columns A and B are highlighted, constituted by three electromagnets 2 and relative coils 3 spaced by spacing Z. Such columns are alternately offset from each other by the distance h.
  • columns A and B consisting of three electromagnets 2.
  • the coils 3 of the electromagnets 2 of each column are preferably connected in series with each other.
  • the power- supply of the individual coils takes place by applying voltage to the terminals T of the coils 3. It can be observed that the series connection allows to power- supply three electromagnets with only four terminals instead of six.
  • the movable magnetic component is represented by a single cylindrical permanent magnet 7.
  • Figure 2a represents the beginning of the cycle in the direction D l, upwards in the figure, that for sake of simplicity we call "forward".
  • the electromagnet B l, of column B is electrically powered with direct or pulsed DC current, with a polarity such as to magnetize it with a magnetic field having the same polar orientation of the permanent magnet 7.
  • an electronic control unit (not shown) is used connected to the windings 3.
  • the permanent magnet 7 at the end of the previous cycle is moved upwards relative to the electromagnet B l.
  • the permanent magnet 7 receives a double thrust by the poles S-S and N-N and an attraction by the S-N poles upwards in the direction D l.
  • the permanent magnet 7 has preferably a length along the axis W equal to the distance that there is between the opposite edges of the polar extensions 5 measured parallelly to the same axis W or distance R.
  • the thrust, and therefore the force to compress the fluid is proportional to the size of the electromagnets 3, the characteristics of the windings of the coils, the diameter of the permanent magnet 5, the applied voltage and resulting adsorbed amperage.
  • the electronic control unit set to the linear motor's control, suspends power to the reel B l and simultaneously powers the electromagnet Al biasing it + Al -, as in the previous phase, in the same the direction of the permanent magnet 7.
  • the latter is now slightly offset from the electromagnet Al, and is further forced to move in the direction D l coming in a new position shown at the right of Figure 2b in which the S pole of the permanent magnet 7, attracted by N pole of electromagnet Al, aligns with the latter having made a shift s2.
  • the linear motor can work simply by setting a timer on and alternating the power supply of the various electromagnets, it is preferable to insert two electromagnetic or photoelectric sensors 21 and 22 to signal when the permanent magnet 7 reaches the end of the stator 1 as shown in figure 2d and 2h.
  • Figure 2e shows the beginning of half return-cycle in the back direction D2, opposite to the direction Dl.
  • the coil A3 in column A is biased and, similarly to the forward cycle, the power supply of the electromagnets of the column A and B is alternated arriving at the end of the cycle, the latter being represented in Figure 2h.
  • control unit detects the completion of the cycle and starts a new cycle as in Figure 2a.
  • the operation described so far may take place by appropriately timing the biasing sequence of the coils of the electromagnets 2 by the control unit, hi the calibration phase of the system one must determine at what interval such sequence should take place and what voltage to use according to the operating pressure of the compressor.
  • the control unit preferably comprises means for varying the voltage and frequency of the power- supply of the windings on the basis of variable operating needs.
  • Figure 3a to Figure 3h there is shown a variant of the linear motor with a stator identical to that reported in Figures 2a - 2h, but wherein the movable permanent magnetic component is made no longer by one but by two permanent magnets 7a, 7b.
  • the magnets 7a, 7b are stacked and juxtaposed by the poles of equal polarity (in the illustrated example the poles N-N are close together).
  • the stator 1 is equal to the first variant with the columns A and B offset by a distance h from each other, hi this case the mode changes with which the biasing of the electromagnets 3 takes place by means of the central unit since, instead of biasing only one magnet at a time, two adjacent magnets for each column are biased at a time, that is, a pair of electromagnets at a time.
  • the two permanent magnets 7a, 7b have reached the point of stability, in that the poles of opposite sign, S poles of the lower permanent magnet and N-N poles of the electromagnets B l and B2 and N-N poles of the permanent magnets and the electromagnet B2, attract and line up having resulted in a shift si.
  • control unit suspends power- supply to the pair of electromagnets B l and B2, and simultaneously biases the pair of electromagnets Al and A2, with mode + A1-A2 +, of the column A that cause the quadruple thrust and the triple attraction of the permanent magnets thereby causing the shift s2.
  • Figure 3d shows the last shift s4 that completes half of the cycle detected by sensor 21.
  • FIG. 4 there is represented the upper movable part of the electromagnetic linear motor, which drives the compressor, consisting of a single permanent magnet 7, the two pistons 9a, 1 la and the stem 8 on which they are fixed and, immediately below, the movable part in the case constituted by two permanent magnets 7a and 7b with axis W.
  • the corresponding columns are arranged in a tripod fashion with respect to the axis W thereby privileging axial and non-eccentric thrusts during operation, hi the case of four columns, the homologous columns will be facing each other as will be seen later.
  • the compressor may preferably envisage the use of cooled oil for the simultaneous cooling of the electromagnets 2 and the compression cylinders 9b, l ib, as well as the lubrication of the stem 8 and the bearing bushes 15 within which the stem 8 slides.
  • the actuator comprises the linear motor described above, wherein, though, the compressor's pistons are replaced by an additional component 61 adapted for moving objects or mechanical members.
  • control unit supplies two electromagnets Al, facing each other with respect to the axis W, by biasing them with the same polarity of the permanent magnet 7 while it biases the electromagnets B l with polarity opposite to the permanent magnet 7, so that the N pole of the permanent magnet 7 aligns S - N - S with both poles S of the electromagnets Al and Bl.
  • control unit maintains the electromagnet Al powered while inverting the biasing of the electromagnets B l.
  • the closure occurs with a reversed biasing mode.
  • the biasing of the electromagnets differs from what is described for the compressor and actuator, showing that the power supply and biasing mode of the electromagnets is dependent upon the number of electromagnets and the offset h between the columns.
  • hi figures 9a - 9d there is represented an embodiment of a distribution valve for reciprocating engines, hi Figure 9a the complete valve 90 is visible with the stem 8 and the mushroom head 81; in figure 9b the side view of the stator 91 with two columns A and two columns B, each constituted of an electromagnet 2 with winding 3, offset by the distance h.
  • Figure 9c is a perspective view of the same stator and figure 9d shows the movable part constituted of the permanent magnet 7 with the stem 8 and the mushroom valve 81.
  • a control unit power- supplies two electromagnets Al and A2 of the column A, opposite to each other relative to the axis W, by biasing them with mode + A1-, + A2- while the electromagnets of the two columns B are not power- supplied.
  • the N poles of the permanent magnet attracted by the S poles of the electromagnets and the S poles attracted by the N poles determine the new position of the permanent magnet visible on the right of Figure 10a with consequent displacement si and opening of the valve at position HI.
  • the control unit suspends the power supply of the columns A and supplies the electromagnets of the column B, opposite one another relative to the axis W, by biasing them in mode +B 1-, +B2-.
  • the poles of the permanent magnet align in the same way of figure 10a. This entails a further downward movement s2 and the complete opening of the valve head at position H2.
  • the closure, Figure 10c occurs by biasing again +A- the electromagnets A and subsequently +B- the electromagnets B of Figure lOd until the complete closure of the valve.
  • the biasing mode of the electromagnets depends on the length of the columns A and B, the spacing Z between the poles of the electromagnets that constitute the columns, the offset h between columns A and B and the number and shape of the permanent magnetic component used, hi the specific case of Figure 10a the offset distance h between the columns and the spacing Z between the poles of the electromagnets are equal.
  • the number of columns of electromagnets and/or in a column may vary; and/ or
  • a column of electromagnets corresponds in the stator a homologous column of electromagnets placed in a diametrically opposite position with respect to the axis W. If the columns are four: a column A is opposed to a column A and column B is opposed to a column B. If the columns are six, three columns are to be placed in a tripod fashion each oriented towards the axis W and the same applies for the columns B, and so for more higher numbers of columns. This way the central permanent magnet receives thrusts or attractions that compensate each other while not being subjected to eccentric but only concentric forces; and/ or
  • the longitudinal offset h, parallel to the axis W, between heterologous columns may vary based on design and operational requirements; and/ or
  • the spacing Z between the poles of the electromagnets constituting the columns may vary depending on design and operational requirements; and/ or
  • the central permanent magnetic component may be constituted of a single permanent magnet or by two or more permanent magnets adjacent to one another with poles of same sign; and/or
  • the central permanent magnetic component may be made from some permanent magnets adjacent to one another with poles of opposite sign spaced from each other;
  • the two expansions 5 of an electromagnet are preferably identical; and/ or - the radius of curvature 6 of the two expansions 5 is slightly greater than the diameter of the permanent magnet; and/ or
  • the biasing of the electromagnets may depend on:
  • the permanent magnetic component is constituted of a single permanent magnet or consists of several magnets stacked with opposed poles or with alternating poles in such case spaced;

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Linear Motors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne un moteur linéaire électromagnétique comprenant un stator tubulaire (1), présentant un axe longitudinal (W), et un aimant permanent (7) dont les pôles sont orientés le long dudit axe (W) et linéairement mobiles dans le stator (1). Le stator (1) comprend au moins deux colonnes (A, B) constituées d'électroaimants (2), chaque électroaimant (2) comprenant un noyau (U) constitué d'un segment rectiligne central (4) et de deux expansions polaires d'extrémité (5) tous orientés vers ledit axe (W) et orthogonalement à celui-ci. Les colonnes sont agencées de manière circulaire autour dudit aimant permanent (7) et mutuellement décalées linéairement le long dudit axe (W). L'invention concerne également un compresseur et une soupape entraînée par un tel moteur linéaire électromagnétique.
EP16801302.7A 2015-10-29 2016-10-12 Moteur linéaire électromagnétique Withdrawn EP3369163A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A005088A ITUB20155088A1 (it) 2015-10-29 2015-10-29 Compressore elettromagnetico lineare alternativo simmetrico
PCT/IB2016/056096 WO2017072617A1 (fr) 2015-10-29 2016-10-12 Moteur linéaire électromagnétique

Publications (1)

Publication Number Publication Date
EP3369163A1 true EP3369163A1 (fr) 2018-09-05

Family

ID=55359617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16801302.7A Withdrawn EP3369163A1 (fr) 2015-10-29 2016-10-12 Moteur linéaire électromagnétique

Country Status (9)

Country Link
US (1) US20180216504A1 (fr)
EP (1) EP3369163A1 (fr)
JP (1) JP2018534900A (fr)
CN (1) CN108352775A (fr)
BR (1) BR112018008129A2 (fr)
CA (1) CA3000953A1 (fr)
IT (1) ITUB20155088A1 (fr)
RU (1) RU2018117543A (fr)
WO (1) WO2017072617A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016066129A1 (fr) * 2014-10-30 2016-05-06 陈启星 Moteur linéaire basé sur un tube magnétique radial
CN110094319B (zh) * 2019-05-08 2020-06-16 北京理工大学 多级联双缸式直线压缩机
WO2020243569A1 (fr) * 2019-05-29 2020-12-03 Fine Stephen Rodney Pistons entrainés hydrauliquement-magnétiquement et procédé d'utilisation
CN112217370B (zh) * 2019-07-09 2022-07-05 大族激光科技产业集团股份有限公司 一种管形直线电机动子
CN112211904B (zh) * 2019-07-09 2022-04-19 大族激光科技产业集团股份有限公司 一种直线轴承及管形直线电机
DE102019216117A1 (de) * 2019-10-18 2021-04-22 Festo Se & Co. Kg Linearantriebsvorrichtung
CN117318432B (zh) * 2023-11-29 2024-02-20 湖南天友精密技术有限公司 一种动磁型永磁电机及控制方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086970A5 (fr) * 1970-04-15 1971-12-31 Jeumont Schneider
DD255824A1 (de) * 1986-11-06 1988-04-13 Karl Marx Stadt Tech Hochschul Schrittmotor mit permanentmagnetischer phase
JP2639587B2 (ja) * 1989-03-30 1997-08-13 株式会社いすゞセラミックス研究所 バルブのステッピング駆動装置
JPH06225513A (ja) * 1993-01-20 1994-08-12 Toyota Autom Loom Works Ltd リニアモータ
JP3862885B2 (ja) * 1999-03-09 2006-12-27 山洋電気株式会社 シリンダ型リニア同期モータ
JP2003023764A (ja) * 2001-07-06 2003-01-24 Canon Inc リニアパルスモータ、ステージ装置及び露光装置
JP2004282957A (ja) * 2003-03-18 2004-10-07 Yaskawa Electric Corp 電動シリンダ
KR100603943B1 (ko) * 2004-10-22 2006-07-25 한국전기연구원 횡자속 선형 전동기를 이용한 양방향 구동형 압축기
CN1655429B (zh) * 2005-03-04 2010-05-05 华中科技大学 一种直线电机
JP4106571B2 (ja) * 2006-02-14 2008-06-25 株式会社安川電機 リニアモータ
JP2007318896A (ja) * 2006-05-25 2007-12-06 Yokohama National Univ 回転・直動２自由度モータ
US20090148319A1 (en) * 2007-12-05 2009-06-11 Industrial Technology Research Institute Linear compressor with permanent magnets
AT506496B1 (de) * 2008-02-21 2010-12-15 Lunatone Ind Elektronik Gmbh Fadenführer auf rädern
CN101826784B (zh) * 2010-06-09 2012-06-27 哈尔滨工业大学 模块化纵向磁场永磁电机
AT510807B1 (de) * 2010-12-10 2012-12-15 Lunatone Ind Elektronik Gmbh Linearmotor, insbesondere linearmotor mit einem pendelfeld
JP5702204B2 (ja) * 2011-03-25 2015-04-15 株式会社豊田中央研究所 リニア駆動／発電装置
GB2503015A (en) * 2012-06-14 2013-12-18 Isis Innovation Stator core module and reinforced armature in a linear electromechanical transducer
TWI459690B (zh) * 2012-08-09 2014-11-01 Chun Chao Wang 凸極型線性馬達及具有凸極型線性馬達之往復式雙活塞壓縮機
DE102013218064A1 (de) * 2012-12-06 2014-06-12 Robert Bosch Gmbh Linearantrieb sowie Kolbenpumpenanordnung

Also Published As

Publication number Publication date
BR112018008129A2 (pt) 2018-11-06
JP2018534900A (ja) 2018-11-22
WO2017072617A1 (fr) 2017-05-04
CN108352775A (zh) 2018-07-31
ITUB20155088A1 (it) 2017-04-29
US20180216504A1 (en) 2018-08-02
CA3000953A1 (fr) 2017-05-04
RU2018117543A (ru) 2019-11-29

Similar Documents

Publication Publication Date Title
US20180216504A1 (en) Electromagnetic linear motor
US5833440A (en) Linear motor arrangement for a reciprocating pump system
US20180023551A1 (en) Gaseous fluid pump
US20090191073A1 (en) Magnetic pumping machines
US10030638B2 (en) Electromagnetic actuator for a reciprocating compressor
CN211481129U (zh) 横向磁通型往复式电机和具有横向磁通型往复式电机的往复式压缩机
EP3358727A1 (fr) Moteur alternatif à flux transversal et compresseur alternatif le comprenant
WO2016175375A1 (fr) Compresseur d'air électromagnétique ayant un circuit d'onduleur parallèle appliqué à ce dernier
CN210246582U (zh) 可动铁芯型往复式电机和压缩机
EP0766271B1 (fr) Entraínement magnétique avec aimant permanent
US8274184B2 (en) Torus geometry motor system
US5719543A (en) Magnetically powered linear displacement apparatus
US20130302181A1 (en) Zero emissions pneumatic-electric engine
CN108880185A (zh) 一种线性驱动装置及线性电机
KR101384226B1 (ko) 전자기식 공기 압축기
US10693358B2 (en) Reciprocating electromagnetic actuator with flux-balanced armature and stationary cores
SU591610A1 (ru) Поршневой электромагнитный насос
US20020146334A1 (en) Linear engine and housing for engine
KR101970580B1 (ko) 리니어 모터 및 압축기
RU2704062C1 (ru) Побудитель движения жидкой среды
CN111207054B (zh) 一种空压机
RU5623U1 (ru) Мембранный компрессор

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20180511

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20190218

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190629